WOW! I couldnt do that even if I wanted to. Also, what about the Virgin livery for the 800? (What I mean is that can you make the 800 be able to carry the Virgin livery)

Sadly, the blend files for the 800 have not been made available by the person who created them,who retired last year from Simutrans development. I did ask him to upload copies, but I did not get a response. The best that could be done would be to adapt the graphics for the class 395 - how easy that that would be I do not know.

WOW! I couldnt do that even if I wanted to. Also, what about the Virgin livery for the 800? (What I mean is that can you make the 800 be able to carry the Virgin livery)

As I have already told you before, I really suggest you give it a go yourself as it really is very easy. The tutorial on creating liveries does explain you what entries you need to add to the .dat file to add a livery. Moreover, as the livery is already used by the Class 801, you simply need to copy the entries for the graphics (the ones that start with "EmptyImage...") from that .dat file and add the numbers in brackets and the entries for the livery definitions. Then you can send them to James so he can add them.

Place the image entries after the existing ones and the livery definitions before them. Make sure you add the numbers in brackets (also known as indices) as seen in .dat files for other vehicles with multiple liveries.

To those who are contributing liveries: you might be interested to know that The Hood, who had produced the latest batch of modern rail vehicle graphics, has now uploaded all the .blend files for these to his Github repository here, so it should now be straightforward to modify the livery of the very latest railway vehicles.